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| Job Position | Company | Posted | Location | Salary | Tags |
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MetaWealth
$84k - $90k estimated
Backend Engineer/Node.js, AWS, Solana, Ethereum
London / Bucharest
Product & Engineering – Engineering /
Remote/Europe Based Only /
Remote
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We are looking for a Backend Engineer to join our team and help build scalable, high-performance backend systems. You will be responsible for designing and implementing RESTful and GraphQL APIs, working with microservices and AWS Lambda functions, and integrating with Solana and Ethereum blockchains.This role requires strong problem-solving skills, a deep understanding of backend development, and the ability to collaborate closely with frontend engineers, DevOps, and the product team. Communication and teamwork are key as we work in an Agile development environment.
Responsibilities
- Develop and maintain RESTful and GraphQL APIs
- Design architecture and plan features with scalability and maintainability in mind
- Build internal tools and automate manual processes
- Work closely with the product team, frontend engineers, and DevOps to deliver high-quality features
- Monitor production backend systems to ensure stability and performance
- Integrate with Solana and Ethereum blockchains (Solana experience is highly important)
- Write unit and integration tests to ensure code quality and reliability
Tech Stack
- Languages:Â Node.js (Golang is a plus, but you should be able to learn fast)
- Databases: DynamoDB with AppSync, PostgreSQL on AWS RDS
- Frameworks & Tools: Express, NX monorepo, AWS Amplify (plus)
- AWS Services: Lambda, ECS, ECR, RDS, CloudWatch, SQS, SNS, SES, Cognito, Redis, S3, CloudFront
- Testing: Jest
- Blockchain: Solana (Helius RPC, Helius webhooks, Anchor framework, SPL token, Metaplex Core), Ethereum
Requirements
- 3+ years of backend development experienceStrong experience with Node.js Experience building RESTful and GraphQL APIs
- Hands-on experience with AWS services (Lambda, ECS, RDS, etc.)
- Experience working with microservices architecture
- Proficiency in relational and NoSQL databases (PostgreSQL, DynamoDB)
- Experience with Solana blockchain integrations (Helius, Anchor, SPL token, Metaplex Core)
- Strong knowledge of testing best practices and experience writing testsAbility to quickly learn new technologies, including Golang if needed
Nice to Have
- Experience with Ethereum blockchain
- Familiarity with AWS Amplify
- Knowledge of NX monorepo structureExperience in high-performance, distributed systems
- Experience with Golang
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What does a back-end developer in Web3 do?
A back-end developer in web3 typically works on the server-side of a web application, using technologies that are specific to the decentralized web (also known as Web3-related)
This might involve building and maintaining the infrastructure that supports decentralized applications (dApps), or developing the underlying smart contracts and blockchain-based systems that power those dApps
In general, the goal of a back-end developer in web3 is to create the technologies and tools that enable users to interact with the decentralized web in a secure and seamless way.